package com.atguigu.product.service.impl;

import com.atguigu.product.service.CategoryBrandRelationService;
import org.springframework.stereotype.Service;

import java.util.Map;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.product.dao.BrandDao;
import com.atguigu.product.entity.BrandEntity;
import com.atguigu.product.service.BrandService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;


@Service("brandService")
public class BrandServiceImpl extends ServiceImpl<BrandDao, BrandEntity> implements BrandService {

  @Resource
  private CategoryBrandRelationService categoryBrandRelationService;

  @Override
  public PageUtils queryPage(Map<String, Object> params) {
    //获取key
    String key = (String) params.get("key");
    QueryWrapper<BrandEntity> queryWrapper = new QueryWrapper<BrandEntity>();

    if (!StringUtils.isEmpty(key)) {
      queryWrapper.eq("brand_id", key).or().like("name", key);
    }
    IPage<BrandEntity> page = this.page(
      new Query<BrandEntity>().getPage(params), queryWrapper
    );

    return new PageUtils(page);
  }

  @Transactional
  @Override
  public void updateDetail(BrandEntity brand) {
    //必须保证冗余数据一致性
    updateById(brand);
    if (!StringUtils.isEmpty(brand.getName())) {
      //同步更新其他关联表中的数据
      categoryBrandRelationService.updateBrand(brand.getBrandId(), brand.getName());
      //TODO 更新其他关联
    }
  }
}
